Search Images Maps Play YouTube News Gmail Drive More »
Sign in
Screen reader users: click this link for accessible mode. Accessible mode has the same essential features but works better with your reader.

Patents

  1. Advanced Patent Search
Publication numberUS7917958 B2
Publication typeGrant
Application numberUS 11/367,599
Publication dateMar 29, 2011
Filing dateMar 6, 2006
Priority dateJan 23, 2003
Also published asCA2487404A1, CA2487404C, CN1698101A, CN1698102A, CN1819044A, CN1819044B, CN101188116A, DE602004020317D1, EP1586087A1, EP1586087A4, EP1586087B1, EP1586089A1, EP1586089A4, EP1586089B1, EP1677299A2, EP1677299A3, EP1677299B1, EP1863030A2, EP1863030A3, EP1863030B1, US7733755, US7733756, US8006308, US20040168075, US20040252603, US20060156038, US20090052314, WO2004066283A1, WO2004066287A1
Publication number11367599, 367599, US 7917958 B2, US 7917958B2, US-B2-7917958, US7917958 B2, US7917958B2
InventorsSang Woon Suh, Jin Yong Kim
Original AssigneeLg Electronics Inc.
Export CitationBiBTeX, EndNote, RefMan
External Links: USPTO, USPTO Assignment, Espacenet
Recording medium with copy protection indicating information and apparatus and methods for forming, recording, reproducing and restricting reproduction of the recording medium
US 7917958 B2
Abstract
A recording medium, such as a high-density and/or read-only recording medium, such as BD-ROM, which includes copy protection indicating information, which can identify whether copy protection information is needed or not for the playback of contents stored on the recording medium, and to methods and apparatuses for forming, recording, and reproducing data on the recording medium.
Images(7)
Previous page
Next page
Claims(16)
1. A recording medium, comprising:
a lead-in zone storing a control information unit configured to control recording or reproducing main data on the recording medium, the control information unit including an identifier indicating whether or not the recording medium contains copy protection information for use in decrypting or encrypting main data, the control information unit further including at least medium size information, medium structure information, and data zone allocation information, a plurality of the control information units being repeated in the lead-in zone, the repeated control information units and/or the copy protection information being formed as a wobbled pattern on an area of the recording medium, the repeated control information units and the copy protection information being recorded in different areas of the recording medium from each other; and
a data zone configured to store the main data; wherein each control information unit of the plurality of control information units includes identical information as each other control information unit.
2. The recording medium according to claim 1, wherein the main data is reproduced utilizing the copy protection information if the recording medium contains copy protection information for use in decrypting the main data, or the main data is reproduced directly without utilizing the copy protection information, if the recording medium does not contain copy protection information for use in decrypting the main data.
3. The recording medium according to claim 2, wherein the recording medium does not contain copy protection information for use in decrypting the data if the identifier indicates the recording medium does not contain copy protection information.
4. The recording medium of claim 1, wherein the copy protection information includes a key value for encrypting/decrypting the main data.
5. The recording medium of claim 4, wherein the copy protection information is selectively or repeatedly recorded on the recording medium.
6. The recording medium of claim 1, wherein the identifier and the copy protection information are recorded in a lead-in area, of the recording medium, and wherein the identifier is followed by the copy protection information.
7. A method of forming a recording medium, comprising:
generating a control information unit to control a recording or reproducing of main data to be recorded or recorded on the recording medium, the control information unit including an identifier indicating if the recording medium is configured to contain copy protection information required for decrypting and encrypting the main data, the control information unit further including at least medium size information, medium structure information, and data zone allocation information;
forming a first area in the recording medium, a plurality of the control information units being repeated in the first area, the copy protection information not being formed in the first area, the repeated control information units and/or the copy protection information being formed as a wobbled pattern on an area of the recording medium; and
forming a second area in the recording medium, the second area configured to store the main data; wherein each control information unit of the plurality of control information units includes identical information as each other control information unit.
8. The method of claim 7, wherein the first area is a lead-in area of the recording medium.
9. The method of claim 7, wherein the copy protection information is recorded repeatedly.
10. A method for reproducing data from a recording medium, the method comprising:
detecting an identifier indicating if the recording medium contains copy protection information for use in decrypting main data, the identifier being stored in a control information unit, the control information unit including information for controlling reproduction of the main data, the control information unit further including at least medium size information, medium structure information, and data zone allocation information, a plurality of the control information units being repeated on the recording medium, the plurality of repeated control information units and/or the copy protection information being formed as a wobbled pattern, the plurality of repeated control information units and the copy protection information being recorded in different areas of the recording medium from each other; and
reproducing the main data using the copy protection information if the identifier indicates that the recording medium contains the copy protection information, or reproducing the main data directly if the identifier indicates that the recording medium does not contain the copy protection information; wherein each control information unit of the plurality of control information units includes identical information as each other control information unit.
11. The method of claim 10, wherein the detecting includes extracting the identifier from at least one of the plurality of repeated control information units.
12. The method of claim 10, wherein the copy protection information includes a key value for encrypting/decrypting the main data, and wherein the reproducing includes processing the main data using the key value.
13. The method of claim 12, wherein the copy protection information is repeatedly recorded in the recording medium, and wherein the reproducing includes detecting at least one repetition of the repeatedly-recorded copy protection information.
14. An apparatus for reproducing data from a recording medium, the apparatus comprising:
a signal detector configured to detect data from the recording medium by converting a beam reflected from the recording medium into electric signals corresponding to the data, the data including main data and a control information unit for controlling reproduction of the main data recorded on the recording medium, the control information unit including an identifier indicating if the recording medium contains copy protection information for use in decrypting the main data, the control information unit further including at least medium size information, medium structure information, and data zone allocation information, a plurality of the control information units being repeated on the recording medium, a plurality of the control information units being repeatedly recorded on the recording medium, the plurality of repeated control information units and/or the copy protection information being formed as a wobbled pattern, and the signal detector being configured to detect the copy protection information and at least one of the plurality of the repeated control information units in different areas of the recording medium from each other; and
a signal processor configured to process the main data using the copy protection information if the identifier indicates that the recording medium contains the copy protection information, or reproduce the main data directly if the identifier indicates that the recording medium does not contain the copy protection information; wherein each control information unit of the plurality of control information units includes identical information as each other control information unit.
15. The apparatus of claim 14, wherein the copy protection information includes a key for encrypting/decrypting the main data, and wherein the signal processor is configured to process the main data using the key.
16. The apparatus of claim 15, wherein the copy protection information is repeatedly recorded in the recording medium, and the signal detector is configured to detect at least one repetition of the repeatedly-recorded copy protection information.
Description
CROSS-REFERENCE TO RELATED APPLICATIONS

This is a divisional application of, and claims priority under 35 U.S.C. §120 on, U.S. application Ser. No. 10/762,536, filed Jan. 23, 2004, the entire contents of which are incorporated by reference, which claims priority of Korean Patent Application No. 2003-004488, filed on Jan. 23, 2003; and Korean Patent Application No. 2003-008317, filed on Feb. 10, 2003, both in the Korean Intellectual Property Office, the entire contents of which are hereby incorporated by reference.

BACKGROUND OF THE INVENTION

1. Field of the Invention

The present invention relates to a recording medium such as BD-ROM (Blu-ray Disc ROM), which includes copy protection indicating information and an apparatus and methods for forming, recording, reproducing, and restricting reproduction of illegally duplicated recording media.

2. Description of the Related Art

Recently, standardization of a new high-density optical disc, a rewritable Blu-ray disc (BD-RE: Blu-ray Disc-Rewritable), have been under development where large quantities of high quality video and audio data can be recorded. Once the standard of a BD-RE has been established, products adopting the new optical discs are expected to be commercially available in the near future.

As illustrated in FIG. 1, a BD-RE has an inner hole; clamping area, transition area, BCA (Burst Cutting Area) area, and lead-in area, located in sequential order along radial direction. A data area and lead-out area reside in the center and outermost annulus of the disc, respectively.

The lead-in area is partitioned into a first guard (Guard 1) area, PIC (Permanent Information & Control data) area, a second guard (Guard 2) area, Info 2 area, OPC (Optimum Power Calibration) area, etc. The first guard area and PIC area are pre-recorded areas, whereas the remaining lead-in areas, data area, and lead-out area correspond to rewritable areas which can be overwritten with new data.

General information of a disc which needs to be permanently preserved may be recorded in the PIC area, which can be encoded in wobbled grooves of a track by HFM (High Frequency Modulation) method. HFM Grooves may be modulated in the radial direction with a rather high bandwidth signal, to create a data channel for replicated information with sufficient capacity and data rate. As shown in FIG. 2, encoding data into wobbled groove can be performed by bi-phase modulation and thus recording.

In this modulation method, a bit with value 0 may be represented by a transition at the start of the bit cell and a bit with value 1 may be represented by a transition at the start and in the middle of the bit cell. The modulated bits may be recorded on the disc by a deviation of the groove from its average centerline as indicated in FIG. 2. The length of each bit cell may be 36 T, where T corresponds to the length of a channel bit in the rewritable data areas.

Along with the development of a BD-RE, has been the development of a corresponding read-only disc, a read-only Blu-ray disc (hereinafter, referred to as ‘BD-ROM’). As shown in FIG. 3, the BD-ROM disc may include an inner area, clamping area, transition area, information area, and rim area.

The main data of an audio/video (A/V) stream recorded in a data zone within an information area can be recorded with encryption with copy protection information (CPI) to prevent unauthorized copy.

Various disc information (DI) about the disc, such as the type of a disc, may be recorded in the PIC area within the information area. When encrypted main data are recorded in the data zone, copy protection information (CPI) for decryption can also be recorded in PIC area.

When an optical disc apparatus playing a recording medium performs initial servo operations in accordance with the insertion of a disc, copy protection information (CPI) recorded in the PIC area is detected. If main data recorded in a pre-recorded data area is found to be encrypted, the main data is output after decryption using the copy protection information.

Even when copy protection information is not recorded in the PIC area because the contents recorded in data area of a BD-ROM are not encrypted, an optical disc apparatus performing initial servo operations still performs a series of operations to detect copy protection information in the PIC area under the assumption that encryption has been applied to the contents. Such a preliminary operation can cause a delay in the playback of actual data. Also, if any data is recorded on the rewritable disk, i.e., BD-RE, or recordable disk, i.e., BD-WO and its data is copy protected, a similar problem exists when the data is reproduced.

Further, if copy protection information is not detected, it cannot be determined whether there is no copy protection information initially because the disc is an illegal medium, or there is no copy protection information because the disc is a legal and copy-free medium.

SUMMARY OF THE INVENTION

In exemplary embodiments, the present invention is directed to a recording medium, such as a high-density and/or read-only recording medium, such as BD-ROM, which includes copy protection indicating information, which can identify whether copy protection information is needed or not for the playback of contents stored on the recording medium, and to methods and apparatuses for forming, recording, and reproducing data on the recording medium.

In exemplary embodiments, the present invention is directed to a recording medium, such as a high-density and/or read-only recording medium, such as BD-ROM, which includes information in a particular area indicating whether or not copy protection information to decrypt recorded contents is present, and to methods and apparatuses for forming, recording, and reproducing data on the recording medium.

In exemplary embodiments, the present invention is directed to a recording medium, such as a high-density and/or read-only recording medium, such as BD-ROM, which includes information regarding the presence of copy protection information in the disc information, and to methods and apparatuses for forming, recording, and reproducing data on the recording medium.

In exemplary embodiments, the present invention is directed to a recording medium, such as a high-density and/or read-only recording medium, such as BD-ROM, which includes information regarding the presence of copy protection information as header information of a copy protection information field, and to methods and apparatuses for forming, recording, and reproducing data on the recording medium.

In exemplary embodiments, the present invention is directed to a recording medium, such as a high-density and/or read-only recording medium, such as BD-ROM, which includes copy protection indicating information, which is used to determine whether copy protection information is present and whether decryption is necessary, and to methods and apparatuses for forming, recording, and reproducing data on the recording medium.

In exemplary embodiments, the present invention is directed to a recording medium, such as a high-density and/or read-only recording medium, such as BD-ROM, which includes copy protection indicating information, which is used to determine whether copy protection information is present and whether decryption is necessary, playback of contents is directly started, irrespective of whether or not recorded contents have been encrypted, and to methods and apparatuses for forming, recording, and reproducing data on the recording medium.

In exemplary embodiments, the present invention is directed to a recording medium, such as a high-density and/or read-only recording medium, such as BD-ROM, which includes copy protection indicating information indicating whether or not the recording medium contains copy protection information for use in decrypting the recorded data, wherein the copy protection indicating information and/or the copy protection information are recorded in wobbled pre-pit pattern on an area of the recording medium.

In exemplary embodiments, the present invention is directed to a method for copy protection, which includes utilizing copy protection indicating information to indicate whether or not the recording medium contains copy protection information for use in decrypting the data, to reproduce the data, wherein the copy protection indicating information and/or the copy protection information are recorded in wobbled pre-pit pattern on an area of the recording medium.

In exemplary embodiments, the present invention is directed to a method for copy protection, which includes detecting copy protection indicating information indicating whether or not the recording medium contains copy protection information for use in decrypting the data, wherein the copy protection indicating information and/or the copy protection information are recorded in wobbled pre-pit pattern on an area of the recording medium; and playing the data utilizing the copy protection information if the recording medium contains copy protection information for use in decrypting the data, or playing the data directly without utilizing the copy protection information, if the recording medium does not contain copy protection information for use in decrypting the data, based on the detected copy protection indicating information.

In exemplary embodiments, the present invention is directed to a method for copy protection, which includes utilizing copy protection indicating information to indicate whether or not the recording medium contains copy protection information for use in decrypting the data, wherein the copy protection indicating information and/or the copy protection information are recorded in wobbled pre-pit pattern on an area of the recording medium.

In exemplary embodiments, the present invention is directed to an apparatus for copy protection, wherein said apparatus utilizes copy protection indicating information to determine whether or not the recording medium contains copy protection information for use in decrypting the data, to reproduce the data based on the copy protection indicating information and the copy protection information, wherein the copy protection indicating information and/or the copy protection information are recorded in wobbled pre-pit pattern on an area of the recording medium.

In exemplary embodiments, the present invention is directed to an apparatus for copy protection, which includes a detector detecting signals recorded on the recording medium, the signal including copy protection indicating information to determine whether or not the recording medium contains copy protection information for use in decrypting the data, wherein the copy protection indicating information and/or the copy protection information are recorded in wobbled pre-pit pattern on an area of the recording medium; and a signal processor for playing the data utilizing the copy protection information if the recording medium contains copy protection information for use in decrypting the data, or playing the data directly without utilizing the copy protection information, if the recording medium does not contain copy protection information for use in decrypting the data based on the copy protection indicating information.

BRIEF DESCRIPTION OF THE DRAWINGS

The accompanying drawings, which are included to provide a further understanding of the invention, illustrate exemplary embodiments of the invention, and together with the description, serve to explain the principles of the present invention.

In the drawings:

FIG. 1 is a diagram illustrating the disc structure of a conventional rewritable Blu-ray disc (BD-RE);

FIG. 2 is a diagram illustrating the high frequency modulation (HFM) groove formed in the PIC area of a rewritable Blu-ray disc;

FIG. 3 is a diagram illustrating each area allocated in a read-only Blu-ray disc (BD-ROM) in an exemplary embodiment of the present invention;

FIG. 4 is a diagram illustrating an exemplary embodiment wherein information regarding the presence of copy protection information is recorded in the PIC area of a Blu-ray disc according to an exemplary embodiment of the present invention;

FIG. 5 is a diagram illustrating the fields of disc information recorded and managed in a high-density Blu-ray disc, wherein a flag indicating the presence of copy protection information is included in an exemplary embodiment of the present invention;

FIG. 6 is a diagram illustrating an exemplary embodiment wherein recorded in the BCA area of a Blu-ray disc according to the present invention is information indicating whether or not copy protection information is recorded;

FIG. 7 is a diagram illustrating a process restoring data encoded in wobbled pits according to an exemplary embodiment of the present invention;

FIG. 8 is a diagram illustrating a simplified structure of an optical disc apparatus capable of playing a high-density Blu-ray disc in accordance with an exemplary embodiment of the present invention;

FIG. 9 is a flowchart illustrating the process of playing a high-density Blu-ray optical disc according to an exemplary embodiment of the present invention; and

FIGS. 10 and 11 are diagrams illustrating respectively the exemplary embodiments according to the present invention, wherein recorded in a Blu-ray disc are information indicating whether or not copy protection information is recorded.

DETAILED DESCRIPTION OF EXEMPLARY EMBODIMENTS

Hereinafter, a high-density read-only recording medium according to exemplary embodiments of the present invention and exemplary embodiments of apparatuses and methods for forming, recording, and reproducing copy protection information will be described in detail with reference to the appended drawings.

As stated above with reference to FIG. 3, a read-only Blu-ray disc (BD-ROM) according to exemplary embodiments of the present invention has a disc structure including inner area, clamping area, transition area, information area, and rim area.

As shown in FIG. 4, disc information corresponding to general information of a disc as well as encrypted main data recorded in data zone, for example, copy protection information required to decrypt A/V data streams may be recorded in the PIC area allocated in the information area.

When the main data is recorded without encryption in the data zone, the copy protection information need not be particularly recorded in the PIC area.

Accordingly, a flag to indicate whether or not copy protection information is recorded in the PIC area may be included in the disc information recorded in the PIC area. The flag (CPI_rec_Flag) indicates the presence of copy protection information and may have a recording size of one byte.

As shown in FIG. 5, one byte is allocated to record the flag indicating the presence of copy protection information within the area reserved for the disc information.

Also, the disc information in the PIC area can be recorded for several times. The flag byte may be recorded only in the first disc information among multiple of disc information which are recorded repeatedly in the PIC area.

As illustrated in FIG. 6, the flag indicating whether or not the copy protection information is recorded may be recorded in another area, e.g., the BCA (Burst Cutting Area) area allocated in the inner ring of the PIC area wherein copy protection information is recorded.

Copy protection information, along with the flag indicating the presence thereof, may be encoded and recorded in wobbled pits rather than in straight pits where data are recorded in general case. To this purpose, pits may be formed in wobbled pattern (or in a zigzag pattern) within as many track sections as needed. Also, it may be encoded and recorded in wobbled pits and straight pits alternatively and/or intermittently within the PIC area. Otherwise, it may be selectively or repeatedly recorded on other area except for the PIC area. It may be recorded by an HFM groove wobbled method such as BD-RE.

The copy protection information may include a key value for encrypting the main data to be recorded on data area.

FIG. 7 is a diagram illustrating an example where data is encoded in wobbled pits by bi-phase modulation, whereby data are detected. In FIG. 7, the value of ‘0101’ is encoded in bi-phase modulated form, e.g., bi-phase modulated HFM Groove, along with wobbled pattern of wobbled pits. The recording example of wobbled pits in FIG. 7 comprises 36 Ts (including marks and spaces) where six 3 T signals (mark) make up of the value of one bit. In the example, left and right transition of a sequence of six pits denoting ‘1’ and a sequence of six pits denoting ‘0’ are provided in opposite directions.

As shown in FIG. 7. the structure by bi-phase modulation is different from the structure illustrated in FIG. 2. That is, the method of FIG. 2 has a bit with value 0, which is represented by a transition at the start of the bit cell and a bit with value 1, which is represented by a transition at the start and in the middle of the bit cell. Otherwise, the method of FIG. 7 has a bit with value 0, which is represented by a transition at the start of low and in the middle of high, and a bit with value 1, which is represented by the transition in the opposite direction. The combination of bits consists of data to detect information recorded as wobbled pit. The wobbled pit can be copy protection information, i.e., key data to decrypt main data recorded on the data zone of the recording medium as shown in FIG. 4A to 4F

That is, the wobbled pit data can be reproduced or detected only when the bi-phased modulation data is detected or reproduced normally. And also, reproduction or decryption of main data is possible only when the wobbled pit data for copy protection is reproduced or detected using the normally detected or reproduced bi-phase modulation data.

When information is recorded in pits, identical pits need not be repeated but modulated varying pits (2 T-8 T) in accordance with input information may be recorded. In this case, too, however, the position of a pit sequence (namely, phase) is shifted approximately by every 18 Ts in order to encode data into wobbled pattern of wobbled pits.

The reflected light reflected from wobbled pits recorded in such a manner undergoes a photoelectric transform by four quadrant light receiving elements 13-16.

As illustrated in FIG. 7, THE photoelectrically transformed electrical signals (Ea, Eb, Ec, Ed) are amplified by a circuit for conventional push-pull track control. More specifically, left and right-side signals of the track (Ea+Eb, Ec+Ed) are amplified by respective amplifiers 10, 11 and the difference signal 501 of the left and right-side signals ((Ea+Eb)−(Ec+Ed)) is output by a differential amplifier 12. When the difference signal 501 is converted a binary signal based on whether its level is above or below a reference, encoded data in wobbled pattern of wobbled pits may be obtained.

Because signals detected from the wobbled pattern of wobbled pits are not available externally, even if data played from a BD-ROM were copied onto another recording medium other than the BD-ROM, playback of the copied data would be impossible.

Instead of recording data in wobbled pattern, if data were recorded in the PIC area according to a different agreement for recording format between manufactures having legal authorities, copying a BD-ROM by unauthorized manufactures can also be made more difficult.

FIG. 8 is a simplified diagram illustrating an optical disc apparatus playing a recording medium of a disc. The apparatus includes an optical pickup 11; VDP (Video Disc Play) system 12 performing signal processing and servo control; and a D/A converter 13. The optical disc apparatus may perform playback processing according to whether or not copy protection information is recorded, as described in conjunction with FIG. 9.

The VDP system 12 of the disc apparatus detects and checks a flag (CPI_rec_Flag) indicating whether or not copy protection information among disc information recorded in the PIC area or encoded in the wobbled pits of an inserted BD-ROM is recorded (S11); otherwise, a flag recorded in the BCA area of a BD-ROM is detected (S11), whereby it is determined whether or not copy protection information is recorded.

If the flag is detected, its value is checked (S13). If the value indicates that copy protection information is recorded, the VDP system 12 of the optical disc apparatus performs (S14) the operation of detecting copy protection information recorded in the PIC area or encoded in the wobbled pits; thereafter, by using the copy protection information, a series of data play operations decrypting and playing encrypted data recorded in the data zone are performed (S15).

When the value of the flag indicates the absence of copy protection information or the flag indicating the presence of copy protection information is not detected, the VDP system 12 omits unnecessary operations to detect non-existent copy protection information in the PIC area, but directly performs the operations of reading out recorded contents in the data area.

As shown in the exemplary embodiment of FIG. 5, the flag indicating whether or not copy protection information is recorded, instead of being included and recorded in the disc information, may be recorded in the PIC area together with copy protection information.

FIG. 10 is an exemplary embodiment illustrating such an arrangement. As shown in the exemplary embodiment of FIG. 10, the flag (CPI_rec_Flag) indicating the presence of copy protection information may be recorded as header information of copy protection information field.

The flag indicating whether or not copy protection information is recorded may have a recording size of one byte. When the value of the flag is ‘0000 0000’, the flag indicates that copy protection information is not recorded (in this case, a succeeding copy protection information field may be filled with ‘00’.) When the value of the flag is ‘0000 1111’, the flag indicates that copy protection information is recorded.

In other exemplary embodiments, copy protection information having a flag indicating whether or not copy protection information is recorded as a header information can be recorded in a particular recording area other than the PIC area, for example, the BCA area.

Copy protection information having a flag indicating whether or not copy protection information is recorded can be recorded in a field of disc information stored in the PIC area. Alternatively, it may be recorded as an independent structure from the disc information.

FIG. 11 describes an exemplary embodiment wherein copy protection information is recorded in the PIC area independently of the disc information.

In the exemplary embodiment of FIG. 11, the flag indicating whether or not copy protection information is recorded also appears in the header of copy protection information. When the value of the flag is ‘0000 0000’, the flag indicates that copy protection information is not recorded (In this case, succeeding copy protection information field may be filled with the value of ‘00’.) When the value of the flag is ‘0000 1111’, the flag indicates that copy protection information is recorded.

As described above, a high-density read-only recording medium and methods for recording copy protection information/playing thereof according to exemplary embodiments of the present invention allows a direct playback of contents stored in a high-density read-only disc unless the contents had been encrypted, whereas proper playback is achieved by reading out decryption information from the disc when encryption has been applied to the contents.

In addition, information for decoding encrypted data is recorded in a form of copy-resistant wobbled pits, whereby illegal copy of the contents stored in a high-density read-only disc is prohibited.

Although exemplary embodiments of the present invention have been described in conjunction with a high-density, read-only recording medium, the teachings of the present invention are also applicable to other recording media, such as recordable, rewritable, or rewritable once media and methods and apparatuses associated therewith, as would be known to one of ordinary skill in the art.

The foregoing description of exemplary embodiments of the present invention has been presented for purposes of illustration; therefore, those skilled in the art may utilize the invention and various embodiments with improvements, modifications, substitutions, or additions within the spirit and scope of the invention as defined by the following appended claims.

Patent Citations
Cited PatentFiling datePublication dateApplicantTitle
US4879707Jan 25, 1988Nov 7, 1989Laser Magnetic Storage International CompanyOptical disk tracking and seeking systems specific track formats using discontinuities
US5295127Dec 22, 1992Mar 15, 1994North American Philips CorporationOptical data recorder with segment synchronization marks
US5572507Sep 11, 1995Nov 5, 1996Victor Company Of Japan, Ltd.Optical disc, device for checking optical disc, and device for recording information on optical disc
US5596639Jan 30, 1995Jan 21, 1997Elonex Ip Holdings Ltd.Cd-prom
US5689486Oct 24, 1996Nov 18, 1997Pioneer Electronic CorporationOptical disc reproducing apparatus
US5703859Aug 29, 1996Dec 30, 1997Sony CorporationDigital video copy protection system
US5706268Feb 18, 1997Jan 6, 1998Sony CorporationApparatus for reproducing an optical recording medium having first and second pit strings on opposite sides of each track
US5737286Feb 15, 1995Apr 7, 1998U.S. Philips CorporationSystem and apparatus for recovering information from a record currier which exhibits variations of two different physical parameters thereof
US5799501Jul 8, 1994Sep 1, 1998Leonard; Richard T.Beverage cooling device
US5802174Jun 27, 1996Sep 1, 1998Sony CorporationData recording medium
US5809006May 31, 1996Sep 15, 1998Cagent Technologies, Inc.Optical disk with copy protection, and apparatus and method for recording and reproducing same
US5818805Oct 17, 1995Oct 6, 1998Sony CorporationReproducing apparatus using an information recording medium wherein multi-bit digital information is represented by a shift amount of a pit edge
US5848050Feb 12, 1997Dec 8, 1998Mitsubishi Denki Kabushiki KaishaOptical disk having a continuous recording track formed of alternating land and groove revolutions
US5878007Apr 8, 1998Mar 2, 1999Matsushita Electric Industrial Co., Ltd.Anti-wobble optical medium and tracking method and apparatus
US5892797Jul 15, 1997Apr 6, 1999Jay DengSystem and method for recovering data encoded using manchester code and other bi-phase level codes
US5894463Mar 7, 1997Apr 13, 1999Sony CorporationFocusing servo controlling apparatus
US6021199Oct 14, 1997Feb 1, 2000Kabushiki Kaisha ToshibaMotion picture data encrypting method and computer system and motion picture data encoding/decoding apparatus to which encrypting method is applied
US6031815Jun 11, 1997Feb 29, 2000U.S. Philips CorporationInformation carrier containing auxiliary information, reading device and method of manufacturing such an information carrier
US6072758 *Oct 24, 1997Jun 6, 2000Sony CorporationDisc recording and/or reproduction apparatus and method thereof
US6150888Nov 16, 1998Nov 21, 2000Sony CorporationPhase locked loop circuit, reproduction apparatus and phase locking method
US6215759May 1, 1998Apr 10, 2001Kabushiki Kaisha ToshibaInformation recording medium with address marks (AM) for error detection, cutting apparatus for manufacturing the information recording medium, and information reproducing apparatus for reproducing the information recording medium
US6223247Mar 29, 1996Apr 24, 2001Sony CorporationDisk shaped recording medium and drive apparatus utilizing logical block address conversion and start addresses which increase from inner and outer circumferential sides of the medium
US6223285Oct 24, 1997Apr 24, 2001Sony Corporation Of JapanMethod and system for transferring information using an encryption mode indicator
US6289102Oct 4, 1996Sep 11, 2001Matsushita Electric Industrial Co., Ltd.Apparatus and method for preventing unauthorized use of information recorded on an information recording medium
US6353890May 29, 1998Mar 5, 2002C-Dilla LimitedMethod for copy protecting a record carrier, copy protected record carrier and means for detecting access control information
US6516064Jul 10, 1996Feb 4, 2003Sony CorporationSignal recording apparatus, signal record medium and signal reproducing apparatus
US6519213Jun 29, 1999Feb 11, 2003Oak Technology, Inc.Method and apparatus for reading data from a disk
US6538982Jan 24, 2000Mar 25, 2003Koninklijke Philips ElectronicsRecord carrier and apparatus for scanning the record carrier
US6549495Jan 20, 2000Apr 15, 2003Koninklijke Philips Electronics N.V.Record carrier, playback device and method of recording information
US6550009Oct 30, 1998Apr 15, 2003Matsushita Electric Industrial Co., Ltd.Encryption system for distributing a common crypt key
US6664526Nov 13, 2001Dec 16, 2003Ricoh Company, Ltd.Optical information recording employing improved recording power control scheme
US6694023Dec 29, 1998Feb 17, 2004Samsung Electronics Co., Ltd.Method and apparatus for protecting copyright of digital recording medium and copyright protected digital recording medium
US6708299Nov 22, 1999Mar 16, 2004Thomson Licensing S.A.BCA data replay
US6738342Dec 27, 2000May 18, 2004Matsushita Electric Industrial Co., Ltd.Optical disc and optical disc address reading apparatus and method
US6847604Nov 18, 2003Jan 25, 2005Victor Company Of Japan, Ltd.Information recording medium, method and apparatus for recording and reproducing information
US6885629Jul 31, 2001Apr 26, 2005Matsushita Electric Industrial Co., Ltd.Recordable optical disk including an auxiliary information presence indicator
US6930977Oct 26, 2000Aug 16, 2005Victor Company Of Japan, Ltd.Optical information recording medium, and substrate and manufacturing method for the optical information recording medium
US6938162Apr 28, 2000Aug 30, 2005Matsushita Electric Industrial Co., Ltd.Optical disk, optical disk recording and reproducing apparatus, method for recording, reproducing and deleting data on optical disk, and information processing system
US7006416Aug 11, 2000Feb 28, 2006Ricoh Company, Ltd.Record medium with mechanism of secrecy protection
US7142494Oct 22, 2002Nov 28, 2006Sony CorporationContent data encryption methodology, medium and apparatus for recording/reproducing content
US7248558Dec 26, 2003Jul 24, 2007Sony CorporationMastering device, disc manufacturing method, disc-shaped recording medium, disc reproduction device, and disc reproduction method
US7266074Jun 28, 2002Sep 4, 2007Samsung Electronics Co., Ltd.Optical disc apparatus and method of reproducing a wobble signal
US20010010666Mar 16, 2001Aug 2, 2001Harukazu MiyamotoOptical disc
US20010036132Mar 8, 2001Nov 1, 2001Sony CorporationOptical disk apparatus and optical disk
US20010046193Jul 2, 2001Nov 29, 2001Sony CorporationOptical recording medium, method for recording/reproducing the optical
US20020024914Aug 29, 2001Feb 28, 2002Shoei KobayashiRecording apparatus and method, reproducing apparatus and method, and recording medium
US20020031079Sep 14, 2001Mar 14, 2002Pioneer CorporationOptically recording medium, and apparatus for and method of manufacturing the same
US20020041686May 9, 2001Apr 11, 2002Pioneer CorporationCopyright protecting method, recording method, recording apparatus, reproduction method and reproduction apparatus
US20020048241Aug 31, 2001Apr 25, 2002Sony CorporationDisk recording medium and disk drive apparatus
US20020048246Oct 25, 2001Apr 25, 2002Pioneer CorporationOptical recording medium, optical recording medium manufacturing apparatus, and optical recording medium manufacturing method
US20020076047Nov 19, 2001Jun 20, 2002Hideo AndoInformation storage medium and information recording/reproducing apparatus
US20020080960Dec 14, 2001Jun 27, 2002Masaaki KanayamaRecording medium, initialize method for recording medium, method for encryption on recording medium, encryption equipment, decryption equipment, and audio/visual/data equipment
US20020089920Feb 4, 2002Jul 11, 2002Yoshiho GotohOptical disk, an optical disk barcode forming method, an optical disk reproduction apparatus, a marking forming apparatus, a method of forming a laser marking on an optical disk, and a method of manufacturing an optical disk
US20020097871Feb 20, 2002Jul 25, 2002Yoshiho GotohOptical disk, an optical disk barcode forming method, an optical disk reproduction apparatus, a marking forming apparatus, a method of forming a laser marking on an optical disk, and a method of manufacturing an optical disk
US20020144114Jan 29, 2001Oct 3, 2002Eastman Kodak CompanyCopy protection using multiple security levels on a programmable CD-ROM
US20020181358Jul 19, 2001Dec 5, 2002Yoichiro SakoRecording medium, recorded medium reproducing apparatus, and reproducing method
US20030007432Apr 10, 2002Jan 9, 2003Matsushita Electric Industrial Co., Ltd.Optical disk comprising a positional information section and a sync mark section each having a wobble pattern
US20030012375Nov 2, 2001Jan 16, 2003Yoichiro SakoRecording device and method, reproducing device and method, and storage medium
US20030048725Dec 6, 2001Mar 13, 2003Samsung Electronics Co., Ltd.Optical recording medium on which multi-modulated header signals are recorded, apparatus and method of recording header signals and apparatus and method of reproducing header signals
US20030053404Mar 21, 2002Mar 20, 2003Tetsuya KondoA substrate having a tiny pattern of serial groove and land portions whose thickness is 0.05-0.4 mm and pitch based on a specific relationship of wavelength, groove/land pitch and numerical aperture of the lens; high-density; cross-erase
US20030117920Oct 31, 2001Jun 26, 2003Yoichiro SakoApparatus for and method of recording/reproducing audio data embedded with additive information
US20030174605Jun 24, 2002Sep 18, 2003Yoichiro SakoData recording medium, recording medium recording and/reproducing apparatus, and recording or reproducing method
US20030185128Sep 21, 2001Oct 2, 2003Mamoru ShojiOptical disc and a reproduction method, reproduction apparatus, and recording apparatus for the same
US20040076110Jun 19, 2001Apr 22, 2004Yasumori HinoOptical disk medium, optical disk device, and master production method
US20040120247Sep 4, 2003Jun 24, 2004Samsung Electronics Co.Optical information storage medium and method of recording information on and/or reproducing information from the optical information storage medium
US20040151091Nov 14, 2003Aug 5, 2004Samsung Electronics Co., Ltd.Optical information reproducing apparatus and method
US20050018555Jan 22, 2003Jan 27, 2005Yuichi SabiDisc-shaped optical recording medium and reproduction limit method thereof
US20050099916Aug 22, 2003May 12, 2005Jeon Ik B.High-density optical disc and recording/reproducing method thereof
US20050122889Dec 26, 2003Jun 9, 2005Seiji KobayashiMastering device, disc manufacturing method, disc-shaped recording medium, disc reproduction device, and disc reproduction method
CN1152170ASep 1, 1996Jun 18, 1997索尼公司Digital video copy protection system
CN1293810AJan 11, 2000May 2, 2001皇家菲利浦电子有限公司Record carrier and apparatus for scanning the record carrier
CN1362707AJul 25, 2001Aug 7, 2002日本先锋公司Optical recording medium, optical recording medium production apparatus and production method
EP0299573A1Jul 8, 1988Jan 18, 1989Philips Electronics N.V.System for recording and/or reading an information signal, record carrier and recording and/or read apparatus for use in such a system, and method of and apparatus for manufacturing such a record carrier
EP0545472A1Nov 25, 1992Jun 9, 1993Philips Electronics N.V.Closed information system with physical copy protection
EP0723216A2Nov 17, 1995Jul 24, 1996Sony CorporationCompact disc player security system reproducing method and apparatus
EP0756279A2Jul 17, 1996Jan 29, 1997Sony CorporationSignal recording and reproduction and signal record media
EP0807929A1May 15, 1996Nov 19, 1997Matsushita Electric Industrial Co., Ltd.Optical disk, bar code formation method for optical disk, optical disk reproduction apparatus, and marking method, laser marking method for optical disk, and method of optical disk production
EP0898271A2Aug 18, 1998Feb 24, 1999Sega Enterprises, Ltd.Optical record carrier and apparatus for recording and reproduction of optical record carrier
EP0936610A2Feb 10, 1999Aug 18, 1999Sony CorporationRecording apparatus recording medium, playback apparatus, recording method and playback method
EP0997899A2Sep 21, 1999May 3, 2000Matsushita Electric Industrial Co., Ltd.Optical disk, method for recording and reproducing additional information to and from optical disk, reproducing apparatus for optical disk, and recording and reproducing apparatus for optical disk
EP1028423A1May 15, 1996Aug 16, 2000Matsushita Electric Industrial Co., Ltd.An optical disk, an optical barcode forming method, an optical disk reproduction apparatus, a marking forming apparatus, a method of forming a laser marking on an optical disk, and a method of manufactoring an optical disk
EP1058254A2Apr 27, 2000Dec 6, 2000Matsushita Electric Industrial Co., Ltd.Optical disk, optical disk recording and reproducing apparatus, method for recording, reproducing and deleting data on optical disk, and information processing system
EP1067540A2Jul 5, 2000Jan 10, 2001Pioneer CorporationCopy protection by adding copy control information
EP1122729A1Aug 25, 2000Aug 8, 2001Sony CorporationData recorded medium, data reproducing method and reproducing apparatus, and data processing system
EP1152412A1Nov 14, 2000Nov 7, 2001Sony CorporationRecording medium, data recording method and apparatus, data reproducing method and apparatus, and copying control method
EP1168312A1Sep 7, 2000Jan 2, 2002Matsushita Electric Industrial Co., Ltd.Optical disk and optical disk apparatus
EP1168328A1Oct 8, 1996Jan 2, 2002Matsushita Electric Industrial Co., Ltd.Optical disk, optical recorder, optical reproducer, cryptocommunication system and program license system
EP1229537A2Jun 27, 1996Aug 7, 2002Sony CorporationData record media
JPH103746A Title not available
JPH0536194A Title not available
JPH0981938A Title not available
JPH1166739A Title not available
JPH1186436A Title not available
JPH05325193A Title not available
JPH07272282A Title not available
JPH08124171A Title not available
JPH08147704A Title not available
JPH09128874A Title not available
JPH10172149A Title not available
JPH10269577A Title not available
Non-Patent Citations
Reference
1Chinese Office Action corresponding to Chinese Application No. 200480000399.8 dated Dec. 19, 2008.
2Chinese Office Action dated Jul. 4, 2008.
3European Office Action dated Dec. 14, 2009 for corresponding European Patent Application No. 06001614.4.
4European Search Report dated Apr. 2, 2008.
5European Search Report dated Jun. 12, 2006.
6European Search Report dated Mar. 12, 2008.
7European Search Report dated Mar. 26, 2008.
8European Search Report dated Nov. 24, 2006.
9European Search Report dated Nov. 7, 2007.
10European Search Report dated Oct. 29, 2007.
11European Search Report dated Sep. 22, 2006.
12International Search Report dated Apr. 28, 2004.
13International Search Report dated May 18, 2004.
14International Search Report dated May 6, 2004.
15Japanese Office Action corresponding to Japanese Application No. 2006-500635 dated Aug. 26, 2008.
16Japanese Office Action dated Aug. 20, 2008.
17Japanese Office Action dated Aug. 24, 2007.
18Japanese Office Action dated Dec. 15, 2009 for corresponding Japanese Patent Application No. 2008-319384.
19Japanese Office Action dated Jan. 12, 2010 for corresponding Japanese Patent Application No. 2007-243684.
20Japanese Office Action dated Jan. 16, 2008.
21Japanese Office Action dated Jul. 14, 2009.
22Japanese Office Action dated Jul. 21, 2009.
23Japanese Office Action dated Jun. 16, 2009.
24Japanese Office Action dated Mar. 17, 2008.
25Japanese Office Action dated Mar. 24, 2008.
26Korean Office Action dated Jul. 18, 2009.
27Korean Office Action dated Mar. 28, 2005.
28Korean Office Action dated Mar. 30, 2006.
29Office Action dated Jul. 13, 2010 in corresponding U.S. Appl. No. 10/516,910.
30Office Acton for corresponding Chinese Application No. 200480000399.8 dated Sep. 1, 2006 and European Search Report and Supplementary European Search Report.
31Russian Office Action dated Jan. 30, 2007.
32Taiwanese Office Action dated Aug. 5, 2010 in corresponding Application No. 093101544.
33Taiwanese Office Action dated Jan. 24, 2010 in corresponding Taiwanese Application No. 095114984, with English translation.
34Taiwanese Office Action dated Jul. 10, 2007.
35Taiwanese Office Action dated Jun. 17, 2010 in corresponding application TW93101547, with English translation.
36U.S. Office Action dated Nov. 10, 2010 in related U.S. Appl. No. 11/357,059.
Referenced by
Citing PatentFiling datePublication dateApplicantTitle
US8576679 *Mar 25, 2011Nov 5, 2013Panasonic CorporationApparatus and method for using content on an optical disc having plural partial areas for recording control information indicating that the use of the content is not permitted
US20120051203 *Mar 25, 2011Mar 1, 2012Masao NonakaApparatus for using content, usage method of the content, computer program, recording medium and integrated circuit
Classifications
U.S. Classification726/26, 726/27, 726/33, 726/31, 713/189, 726/32
International ClassificationG06F12/14, G11B20/18, G11B7/005, G11B7/007, G11B19/12, G11B23/28, G06F17/30, G06F7/04, G11B20/12, G11B20/00, G11B7/013
Cooperative ClassificationG11B7/0053, G11B20/00326, G11B20/00268, G11B2020/1279, G11B20/00601, G11B20/00376, G11B23/281, G11B7/24085, G11B20/0021, G11B7/24082, G11B7/00736, G11B20/00753, G11B20/1217, G11B2220/2541, G11B19/122, G11B20/00492, G11B2020/1288, G11B20/00304, G11B2020/122, G11B20/00086, G11B20/00405
European ClassificationG11B7/007R, G11B20/00P, G11B20/12D, G11B7/005W, G11B19/12C, G11B20/00P5A6D1, G11B20/00P5, G11B20/00P6B2, G11B20/00P11B1, G11B20/00P5G1, G11B20/00P5A6E, G11B20/00P5A6A1, G11B20/00P5A6P, G11B7/24082, G11B20/00P5A6L